From: Bryan Wu <cooloney@kernel.org>
To: alan@redhat.com
Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
Sonic Zhang <sonic.zhang@analog.com>,
Bryan Wu <cooloney@kernel.org>
Subject: [PATCH 8/9] Blackfin Serial Driver: fix a in dma circle rx buffer handling
Date: Fri, 17 Oct 2008 01:44:06 +0800 [thread overview]
Message-ID: <1224179047-13073-9-git-send-email-cooloney@kernel.org> (raw)
In-Reply-To: <1224179047-13073-1-git-send-email-cooloney@kernel.org>
From: Sonic Zhang <sonic.zhang@analog.com>
Reported-by: Qian Zhang <zhangq@sansitech.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---
drivers/serial/bfin_5xx.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 350bfc4..1e027e3 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -402,9 +402,11 @@ static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
else
flg = TTY_NORMAL;
- for (i = uart->rx_dma_buf.tail; i != uart->rx_dma_buf.head; i++) {
+ for (i = uart->rx_dma_buf.tail; ; i++) {
if (i >= UART_XMIT_SIZE)
i = 0;
+ if (i == uart->rx_dma_buf.head)
+ break;
if (!uart_handle_sysrq_char(&uart->port, uart->rx_dma_buf.buf[i]))
uart_insert_char(&uart->port, status, OE,
uart->rx_dma_buf.buf[i], flg);
--
1.5.6
next prev parent reply other threads:[~2008-10-16 17:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-16 17:43 [PATCH 0/9] Blacfin Serial Driver updates for 2.6.28-rc1 (v2) Bryan Wu
2008-10-16 17:43 ` [PATCH 1/9] Blackfin Serial Driver: updates kgdb over Blackfin serial driver with kgdb framework Bryan Wu
2008-10-17 17:41 ` Alan Cox
2008-10-16 17:44 ` [PATCH 2/9] Blackfin Serial Driver: Add a debug function to serial driver Bryan Wu
2008-10-16 17:44 ` [PATCH 3/9] Blackfin Serial Driver: use barrier instead of cpu_relax for Blackfin SMP like patch Bryan Wu
2008-10-16 17:44 ` [PATCH 4/9] Blackfin Serial Driver: fix bug - SIR driver stop receiving randomly Bryan Wu
2008-10-16 17:44 ` [PATCH 5/9] Blackfin Serial Driver: Clean serial console and early prink code` Bryan Wu
2008-10-16 17:44 ` [PATCH 6/9] Blackfin Serial Driver: Fix bug - BF527-EZKIT unable to receive large files over UART in DMA mode Bryan Wu
2008-10-16 17:44 ` [PATCH 7/9] Blackfin Serial Driver: Remove BI status for known_good_char Bryan Wu
2008-10-16 17:44 ` Bryan Wu [this message]
2008-10-16 17:44 ` [PATCH 9/9] Blackfin Serial Driver: Change hardware flowcontrol from poll to interrupt driven Bryan Wu
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